but, the fact is most of the casualties inflicted are not on nato and u.s. forces, it is on the afghans themselves. we've been to several bases where a small number of special operators are out training the afghan local police, and, security personnel, and here's just some of what we have seen the last several days. today we traveled to a remote out post, three marines were killed in a recent green on blue attack and i asked the element leader about the effects of the incident. >> in the aftermath of some of these other events, have any of them ever come to you and said, we are sorry about what happened? >> yes, sir. i -- we've become one of the village and one of the populous and they felt is just as much as we did and we fight side by side and i pick these guys when they are down and they picked us up when we are down, so. >> reporter: this little town, in the sangan district of helmand province was once one of the bloodiest places on the planet and today is protected by local police an afghan special forces and a handful of u.s. marine special operators.